@article{10_37236_323,
     author = {Jean-Christophe Aval and Philippe Duchon},
     title = {Enumeration of alternating sign matrices of even size {(quasi-)Invariant} under a quarter-turn rotation},
     journal = {The electronic journal of combinatorics},
     year = {2010},
     volume = {17},
     doi = {10.37236/323},
     zbl = {1215.05009},
     url = {http://geodesic.mathdoc.fr/articles/10.37236/323/}
}